Right. The popularity of e-bikes is partially just regulatory. An e-bike can go 2-3 times faster than a Bird scooter, but it looks like a bicycle so it is legal to ride more places.
As far as I know you can't really ride your bike on the sidewalk. Either the street or specialised bike lanes. So you will never really see someone driving a bike at 25 km/h (the legal limit in many European countries) on the sidewalk.
Plus, people are much more used to dealing with bikes than scooters.
